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powerpc/mm: Move register_process_table() out of ppc_md

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We want to initialise register_process_table() before ppc_md is setup,
so that it can be called as part of MMU init (at least on Radix ATM).

That no longer works because probe_machine() requires that ppc_md be
empty before it's called, and we now do probe_machine() much later.

So make register_process_table a global for now. It will probably move
into a mmu_radix_ops struct at some point in the future.

This was broken by me when applying commit 7025776ed1 "powerpc/mm:
Move hash table ops to a separate structure" due to conflicts with other
patches.

Fixes: 7025776ed1 ("powerpc/mm: Move hash table ops to a separate structure")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Michael Ellerman 2016-08-04 15:32:06 +10:00
parent 1a058f1643
commit eea8148c69
5 changed files with 10 additions and 5 deletions
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4
arch/powerpc/include/asm/book3s/64/mmu.h
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@ -134,5 +134,9 @@ static inline void setup_initial_memory_limit(phys_addr_t first_memblock_base,
return hash__setup_initial_memory_limit(first_memblock_base,
first_memblock_size);
}
extern int (*register_process_table)(unsigned long base, unsigned long page_size,
unsigned long tbl_size);
#endif /* __ASSEMBLY__ */
#endif /* _ASM_POWERPC_BOOK3S_64_MMU_H_ */

2
arch/powerpc/include/asm/machdep.h
View File

@ -219,8 +219,6 @@ struct machdep_calls {
#ifdef CONFIG_ARCH_RANDOM
int (*get_random_seed)(unsigned long *v);
#endif
int (*register_process_table)(unsigned long base, unsigned long page_size,
unsigned long tbl_size);
};
extern void e500_idle(void);

2
arch/powerpc/mm/hash_native_64.c
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@ -747,5 +747,5 @@ void __init hpte_init_native(void)
mmu_hash_ops.hugepage_invalidate = native_hugepage_invalidate;
if (cpu_has_feature(CPU_FTR_ARCH_300))
ppc_md.register_process_table = native_register_proc_table;
register_process_table = native_register_proc_table;
}

3
arch/powerpc/mm/pgtable-book3s64.c
View File

@ -14,6 +14,9 @@
#include "mmu_decl.h"
#include <trace/events/thp.h>
int (*register_process_table)(unsigned long base, unsigned long page_size,
unsigned long tbl_size);
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
/*
* This is called when relaxing access to a hugepage. It's also called in the page

4
arch/powerpc/mm/pgtable-radix.c
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@ -171,7 +171,7 @@ static void __init radix_init_pgtable(void)
* of process table here. But our linear mapping also enable us to use
* physical address here.
*/
ppc_md.register_process_table(__pa(process_tb), 0, PRTB_SIZE_SHIFT - 12);
register_process_table(__pa(process_tb), 0, PRTB_SIZE_SHIFT - 12);
pr_info("Process table %p and radix root for kernel: %p\n", process_tb, init_mm.pgd);
}
@ -198,7 +198,7 @@ static void __init radix_init_partition_table(void)
void __init radix_init_native(void)
{
ppc_md.register_process_table = native_register_process_table;
register_process_table = native_register_process_table;
}
static int __init get_idx_from_shift(unsigned int shift)